My RaspberryPi has rebooted itself a couple of times recently and
ended up in a non-working state.  In particular it has no ethernet
connection which is rather unfortunate as it's headless.

Power down/power up fixes it but having run for months without
problems previously it would seem there is something wrong.

It's pretty much up to date as regards software:-

    Linux dns 4.14.79+ #1159 Sun Nov 4 17:28:08 GMT 2018 armv6l GNU/Linux


Syslog has the following:-

    Jan 20 06:25:06 dns liblogging-stdlog:  [origin software="rsyslogd"
swVersion="8.24.0" x-pid="221" x-info="http://www.rsyslog.com"] rsyslogd was
HUPed
    Jan 20 06:25:07 dns liblogging-stdlog:  [origin software="rsyslogd"
swVersion="8.24.0" x-pid="221" x-info="http://www.rsyslog.com"] rsyslogd was
HUPed
    Jan 20 06:47:01 dns CRON[12852]: (root) CMD (test -x /usr/sbin/anacron || (
cd / && run-parts --report /etc/cron.weekly ))
    Jan 20 06:49:25 dns dnsmasq-dhcp[383]: DHCPREQUEST(eth0) 192.168.1.96
2c:08:8c:cc:9a:9e
    Jan 20 06:49:25 dns dnsmasq-dhcp[383]: DHCPACK(eth0) 192.168.1.96
2c:08:8c:cc:9a:9e humaxYouview
    Jan 20 06:17:10 dns systemd-modules-load[67]: Inserted module 'snd_bcm2835'
    Jan 20 06:17:10 dns systemd-modules-load[67]: Inserted module 'i2c_bcm2708'
    Jan 20 06:17:10 dns systemd-modules-load[67]: Inserted module 'i2c_dev'
    Jan 20 06:17:10 dns fake-hwclock[81]: Sun 20 Jan 06:17:02 UTC 2019
    Jan 20 06:17:10 dns systemd-fsck[97]: /dev/mmcblk0p2: clean, 52463/483328
files, 518329/1925120 blocks
    Jan 20 06:17:10 dns blkmapd[107]: open pipe file
/run/rpc_pipefs/nfs/blocklayout failed: No such file or directory
    Jan 20 06:17:10 dns systemd[1]: Started File System Check on Root Device.
    Jan 20 06:17:10 dns systemd[1]: Started Create Static Device Nodes in /dev.
    Jan 20 06:17:10 dns systemd[1]: Started Apply Kernel Variables.
    Jan 20 06:17:10 dns systemd[1]: Started pNFS block layout mapping daemon.
    Jan 20 06:17:10 dns systemd[1]: Started File System Check Daemon to report
status.
    Jan 20 06:17:10 dns systemd[1]: Starting udev Kernel Device Manager...
    Jan 20 06:17:10 dns systemd[1]: Starting Remount Root and Kernel File
Systems...
    Jan 20 06:17:10 dns systemd[1]: Started Remount Root and Kernel File
Systems.
    Jan 20 06:17:10 dns systemd[1]: Starting Load/Save Random Seed...
    Jan 20 06:17:10 dns systemd[1]: Starting udev Coldplug all Devices...
    Jan 20 06:17:10 dns systemd[1]: Starting Flush Journal to Persistent
Storage...
    Jan 20 06:17:10 dns systemd[1]: Started udev Kernel Device Manager.
    Jan 20 06:17:10 dns systemd[1]: Started Load/Save Random Seed.
    Jan 20 06:17:10 dns systemd[1]: Started Flush Journal to Persistent
Storage.
    Jan 20 06:17:10 dns systemd[1]: Started Set the console keyboard layout.
    Jan 20 06:17:10 dns systemd[1]: Reached target Local File Systems (Pre).
    Jan 20 06:17:10 dns systemd[1]: Started udev Coldplug all Devices.
    Jan 20 06:17:10 dns systemd[1]: Found device /dev/ttyAMA0.
    Jan 20 06:17:10 dns ifplugd: Invoking ifplugd for eth0
    Jan 20 06:17:10 dns systemd[1]: Found device /dev/mmcblk0p1.
    Jan 20 06:17:10 dns systemd[1]: Mounting /boot...
    Jan 20 06:17:10 dns systemd[1]: Mounted /boot.
    Jan 20 06:17:10 dns systemd[1]: Reached target Local File Systems.
    Jan 20 06:17:10 dns systemd[1]: Starting Preprocess NFS configuration...
    Jan 20 06:17:10 dns systemd[1]: Starting Create Volatile Files and
Directories...
    Jan 20 06:17:10 dns systemd[1]: Starting Raise network interfaces...
    Jan 20 06:17:10 dns systemd[1]: Starting Set console font and keymap...
    Jan 20 06:17:10 dns systemd[1]: Started Preprocess NFS configuration.
    Jan 20 06:17:10 dns ifplugd(eth0)[171]: ifplugd 0.28 initializing.
    Jan 20 06:17:10 dns systemd[1]: Reached target NFS client services.
    Jan 20 06:17:10 dns systemd[1]: Starting NFSv4 ID-name mapping service...
    Jan 20 06:17:10 dns systemd[1]: Started Set console font and keymap.
    Jan 20 06:17:10 dns ifplugd(eth0)[171]: Using interface
eth0/B8:27:EB:22:D7:92 with driver  (version: 22-Aug-2005)
    Jan 20 06:17:10 dns ifplugd(eth0)[171]: Using detection mode: SIOCETHTOOL
    Jan 20 06:17:10 dns ifplugd(eth0)[171]: Initialization complete, link beat
not detected.
    Jan 20 06:17:10 dns systemd[1]: Started Create Volatile Files and
Directories.
    Jan 20 06:17:10 dns kernel: [    0.000000] Booting Linux on physical CPU
0x0
    Jan 20 06:17:10 dns kernel: [    0.000000] Linux version 4.14.79+
(dc4@dc4-XPS13-9333) (gcc version 4.9.3 (crosstool-NG
crosstool-ng-1.22.0-88-g8460611)) #1159 Sun Nov 4 17:28:08 G>
    Jan 20 06:17:10 dns kernel: [    0.000000] CPU: ARMv6-compatible processor
[410fb767] revision 7 (ARMv7), cr=00c5387d
    Jan 20 06:17:10 dns kernel: [    0.000000] CPU: PIPT / VIPT nonaliasing
data cache, VIPT nonaliasing instruction cache
    Jan 20 06:17:10 dns kernel: [    0.000000] OF: fdt: Machine model:
Raspberry Pi Model B Rev 1
    Jan 20 06:17:10 dns kernel: [    0.000000] Memory policy: Data cache
writeback
    Jan 20 06:17:10 dns kernel: [    0.000000] cma: Reserved 8 MiB at
0x0b400000
    Jan 20 06:17:10 dns kernel: [    0.000000] On node 0 totalpages: 49152
    Jan 20 06:17:10 dns kernel: [    0.000000] free_area_init_node: node 0,
pgdat c09c6650, node_mem_map cbe3a300
    Jan 20 06:17:10 dns kernel: [    0.000000]   Normal zone: 432 pages used
for memmap
    Jan 20 06:17:10 dns kernel: [    0.000000]   Normal zone: 0 pages reserved


So, up to 06:49 (where it serves a DNS request, it's running dnsmasq on my LAN)
all seems well,
then the time jumps backwards and after some systemd messages it reboots itself
(into a not fully
working state).

Does anyone have any idea what might be going wrong?

--
Chris Green
·

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